Troubled actress Amanda Bynes is set to remain under the care of her mother after a judge denied her attempt to gain control of her medical and financial decisions.

A lawyer claiming to represent the 28-year-old actress , who was released from a psychiatric treatment facility in Pasadena, California on Thursday after being involuntarily committed on October 10, asked a judge to remove Lynn Bynes' ability to make decisions on the troubled star's behalf on Friday.

But the judge ruled the Easy A star lacked the capacity to enter into a binding contract or hire a lawyer, so he refused to allow the hearing to go ahead.

(Image: WENN)

He also ruled that Amanda will remain under her mother's care via the conservatorship, according to gossip website TMZ.

A waitress at the eatery claimed she arrived with a mystery man, talked about plastic surgery and stepped out of the way several times for an imaginary person.

(Image: TNYF/WENN.com)

A source previously said the actress feels betrayed by her parents after they secretly arranged for her to be hospitalised again after she was accused of shoplifting and arrested for driving under the influence (DUI) last month.

The star spent five months in a treatment facility in July 2013 when she was placed under involuntary psychiatric hold for the first time. She was released in December and appeared to be getting her life back on track until her previous conservatorship came to an end last month.